For candidates running for Prince George's County's congressional delegation, Tuesday night was a good night to be an incumbent. 

Democratic incumbents Donna Edwards, Steny Hoyer and Chris Van Hollen, representing Marylands 4th, 5th and 8th congressional districts, all handily won their primary elections with commanding results. 

By 11:30 p.m. Edwards had secured 92 percent of the vote, far ahead of runner up George McDermott's 5 percent. 

Charles Shepherd bested three other republican's running for Rep. Edwards' 4th district seat in the primary, securing 60 percent of the vote.

Rep. Steny Hoyer trounced his primary opponent Cathy Johnson Pendleton, securing 84 percent of the vote. 

Facing Hoyer in the general election this November will be Tony O'Donnell, who secured 74 percent of the votes in the 5th congressional district's Republican primary.

Up in the 8th congressional district, incumbent Democratic Rep. Chris Van Hollen holds a commanding 91 percent lead over his sole primary opponent George English. 

Van Hollen will likely go on to face Republican Ken Timmerman, who is holding onto a 10-point lead, securing 45 percent of the vote to Dave Wallace's 35 percent. 

The crowded Democratic Senate primary appears to decided, with Sen. Ben Cardin holding a commanding 73 percent of the vote in a nine candidate field. 

Republican Daniel John Bongino now holds the leade with 33 percent, while Richard Douglas has 28 percent of the vote among 10 candidates seeking the Republican nomination to face Cardin in the general election. 

Last update of charts at 11:35 p.m.